using 3+ widgets in "twenty ten" theme

I'm one of the Cutline >Coraline folks who got theme switched, and am going to change to one of my choosing. I like the body text size of the
"Twenty ten" theme a lot, but as far as I can see it's only possible to use two widgets in the sidebar. There are a Primary and Secondary Widget area and once a widget has been placed into an area, the area will not accept additional widgets. Four more can be used in the footer, but I want to reproduce the several that I used in the sidebar with Cutline.